Most blogging software allows you to format a navigation area around the actual blog content with your own links, graphics, and marketing materials. There are several key elements that every business blog should include in their navigation section:

Links into the “money pages” of your website.
When I refer to money pages I mean the pages that make you revenue. Don’t bother with linking to your privacy policy, etc., focus your blog’s links on the pages where you earn money either directly or indirectly from visitors to that page

Advertisements for your specific products/services.
Remember that many, if not most of the people who will see your blog will enter your blog directly through a search engine listing, rather than entering through another page on your site. That means that they have no idea who you are, what you offer, and why they should buy from you rather than someone else. That’s why advertising for your set of products and services can be a great moneymaker on a blog.

Google AdSense advertising.
Google AdSense is a program that allows you to place advertisements on your page that earn you money each time that someone clicks on an ad. Google has developed a program that reads the page, figures out what that page is about, and then displays ads that are related to the subject matter of that specific page.

More suggestions can be found at Blogging for Business